Device to prevent rotation of bobbins



May 3,19z1.. A

v. H. `.JENNINGS nmol 'ro PREVENT nonnen or onms Filed Oct. 28. 1925174m B c5430 5p Imm Mew

v 'Hufigs- Patented May 3, 1927.

UNITED `STATES l 1,626,837 PATENT oFFleE.

vieron H. Jennings; or wnensmn, MAssricHUsTTsirissrGNoR To cnoivrrToN .e

xNoWLEs LOOM wenns; 0F WORCESTER, MASSACHUSETTS, A coRroRATIo'N 0FMASSACHUSETTS.

DEVICE TO PREVENT ROTATON OF BBINS.

Application filed ctoter 28, `Serial o.

This invent-ion relates to nnilti-eoldr weft replenishingine'othani'sins of they type set forth in Patent No` 1,030,748 and it isthe general object oit the invention to' provide the walls iof theseveral bobbin compartinent's with yielding surfaces having a relativelyhigh coefiieiency of friction to the end that the butts of the bobbinsinay be resisted in 'heir normal tendeny to rotate.

t is found `when bobbins arf reqni'red lto wait for anyl length of timebefore transfer in the usual form. of multi-color weft r ple'nishingniechani'snis that diie to vibration of the loom they tend to rotate ontheir axes, this rotation in some instances resulting in breaking of thethread which extends to thethread hold-er, Varions devices have beensnggestedo correct this defect but inost, ot thein have involved ainoving part. It is a fnrt'her object o f invention t6 overcoine thistendency on the part of the bobbins to rotate by lining lthe walls ofthe bobbin compartments with a substance such as rnbber.

It isfound .that slight i'rre'gulnrities-exist in the width of thevarionsbobbin coni` partments diie to .the niovenient of the pattern inthe sandl dnring the molding process and it is found that sonne of thecompartinents are wide' enough to .perinit vibration oi' the bobbins toany undesirable, degree. It is a still` f urthei" ohje'ct of the"invention to ooinpensate for variations inthe width of the compartmentsproviding any elastic Aeleniein conveniently applieiily v`to' theconipar'trnent walls'Y Aand stretchedtof vary its -hiuiii'ess sj@ riiiri rei'iriv'ny their prrr lor the elementA willA in a" wide',eempartnientto render the saiheof fdesirable width.v

ith these and other bjeftsl in` v i'ew which willy appear as tl'ije` ldes'orip'tion prooeeds, iny invention resides in the Conibination and larrangementy .of parts" hereinafter described and set forth inthe,.ilainis.; y

In the accompanying drawings' wherein I-have shown three dierent Jformsof my invention,

Fig. 1 is a vertical transverse section through a portion of amulti-color weft replenishing mechanism looking toward the butt end ofthe bobbins, and having the elastic element a plied thereto.

Fig. 2 is a horizontal section on line 2--2 of Fig. 1,

Fig 3 isl an enlarged vertical section on lineB--B oi Fig. 2, and

.Fim 4 is a view s1 iiir rp Fig, 2 but Showing iiidifia form-S or theiiiveiirirr Referring td the drawings@ will be seen that` I have`provided a weft replenishing ine'clani'sm fiaine 10 provided withflanges 11, 2, 13, 1&1, and' ,whichy dehneibobb'in cofinpatinents A, B,C, Vandd) which as shown in Fig. 2 are snnicient'ly Awide ,to per* initfi'eeilnotioh o ,thehe'ads of the bobbins located therein. Cradles orotherV controlling de vo s 416 are locatedone at thebottoni of ea` h thee'onipartnients' andare inevable b'y, rneehanis'in not shown `tovrelease ni bobbi'iis one :it a tir'ii' s' that they rria'y l rn'ovetotransfr position.

w at wider than thelcinpartrn'nt C, and

iii rdr' r6 @rrete this diet ther rribbjer bandt iay bestri'ehedjse'ythat the, rhiir pari thereof is" in coin'pairtni'ent. C`and' the thick part in D. this way slight inaicora'cies' in the widthgoi' the coinpart# mints' are.o orreot`ed. The b andis shown as olf."eqnal thickness on ibeth sides of the flange 12, it.being yas'si'unedthat coinp'artrnents Ay ariel B' are @i equal width indl iii both'iristanoefs" the; surfaceV yofthe band tendsv to hold the heads. of thebobbins against rotation. bobbin's', liolwver,I are y free `to nievedewjiifirardiy Witheet interruption as the cradls' 1'6 o erafte. ,i y B"y `refer'jriiig ifo' Fig. if it'ririii' be geen `theirflange`12'issnrrounded a tubularl band` 2 1 rhi'nnr oijtiorilofgwhh hugstigijiiiy against the/hnge' while the outer portion is IiseJ and can'eonf'r'in itself sninewhat to the contour of the bobbin.

The iange 14 in said Fig. 4 is shown as provided with a pair of narrowrubber bands 22 so proportioned as to it between the rings 17 on thebobbin head. In these modified forms the feature set forth in Fig. 3 ispresent, the friotional Contact between the ange and the inner surfaceof the band overcoming any tendency on the part of the band to assume auniform cross section after it has been set to a position correspendingto that shown in Fig. 8.

From the foregoing it will be seen that I have provided a very simplemeans for compensating .for the slight irregularities which occur :inthe width of the bobbin compartn'ients and that the means employedpresent to the bobbins a surface having a relatively high coefficient offriction. In this way the compartments which are of objectionable widthmay be made narrower by a substance having a surface oifering resistanceto the rotation of the bobbins.

Having thus described my invention it will be apparent that changes andmodifications may be made therein by those skilled in the art withoutdeparting from the spirit and scope of the invent-ion', and I do notwish to be limited to the details herein disclosed but what I claim is:

l. In a weft replenishing loom, a frame, flanges extending therefrom anddefining bobbin compartments, and resilient means carried by one of theflanges and common to two adjacent compartments, said means presenting asurface having a relatively high coeiicient of friction to the bobbinsand capable of movement as a whole in a direction parallel to thecompartment to assume a plurality of relative positions with respect tothe flange to vary the width of the compartments.

2. In a weft replenishing mechanism, means defining aV pair of adjacentbobbin compartments, a wall between and common to said compartments, andresilient means supported by and extending on both sides of the wall tobe common to both compartments, said means being movable as a whole withrespect to the wall in a direction parallel. to the compartments so thatthe greater portion thereof may lie in one compartment vand the lesserportion thereof in the other compartment to compensate for slightvariations in the width of the compartments.

3. In a weft replenishing mechanism, means defining a pair of adjacentbobbin compartments, a wall between and common to said compartments, anda continuous resilient member stretched around and supported on the walland movable relatively to the wall to have the larger portion thereof inone compartment and the smaller p0rtion thereof in the other compartmentto compensate for variations in the width of the compartments.

4. In a weft replenishing mechanism, means defining a pair of adjacentbobbin compartments, a wall between and common to said compartments, anda continuous resilient member stretched around and support ed on thewall and movable relatively to the wall to have the larger portionthereof in one eomparti'nent and the smaller portion thereof in theother compartment to compensate for variations in thel width of thecompartments, said member having a surface with a relatively highcoefficient of friction to hold the same on the wall and also to resistrotation of the bobbins in the compartment.

5. In a weft replenishing mechanism, means defining a pair of adjacentbobbin compartments, a wall between and common to the compartments, anda resilient member held to the wall and capable of being stretched tohave the thicker portion thereof in one compartment and the thinnerportion thereof in the other compartment to compensate for variations inthe width of the compartments.

6. In a weft replenishing mechanism, means defining a pair of adjacentbobbin compartments, a wall between and common to both compartments, anda continuous rubber band mounted on the wall and common to bothcompartment-s, said rubber band being movable relatively to the wall andheld frictionally thereto to have the thicker portion thereof in onecompartment and the thinner portion thereof in the other compartment tocompensate for variations in the width of the compartments.

7. In a weft replenishing loom, a frame, a pair of spaced parallelflanges, a third `flange parallel to and lying between the pair offlanges to form with the latter a pair of bobbin compartments, and anelement stationary and held to the third flange and lying partly in eachof the compartments, the portion of the element in one compartment beingthinner than the portion there of lying` in the other compartment, saidelement being .movable as a whole relatively to the third flange toassume different positions relatively thereto to vary the width of thecompartments.

In testimony whereof I have hereunto affixed my signature.

VICTOR H. J ENN IN GS.

